Re-land^2 WebVR compositor bypass via BrowserMain context + mailbox

device/vr/vr_device.h

Index: device/vr/vr_device.h
diff --git a/device/vr/vr_device.h b/device/vr/vr_device.h
index be836ee12016272cdbcb11abc704cd63380d2396..88b8678172b832bf9b564e51f17e7cfac173469e 100644
--- a/device/vr/vr_device.h
+++ b/device/vr/vr_device.h
@@ -10,6 +10,11 @@
 #include "device/vr/vr_export.h"
 #include "device/vr/vr_service.mojom.h"
 
+namespace gpu {
+class Mailbox;
+class SyncToken;
+}
+
 namespace device {
 
 class VRDisplayImpl;
@@ -30,10 +35,15 @@ class DEVICE_VR_EXPORT VRDevice {
   virtual void RequestPresent(const base::Callback<void(bool)>& callback) = 0;
   virtual void SetSecureOrigin(bool secure_origin) = 0;
   virtual void ExitPresent() = 0;
-  virtual void SubmitFrame(mojom::VRPosePtr pose) = 0;
+  virtual void SubmitFrame(int16_t frame_index,
+                           const gpu::Mailbox& mailbox,
+                           const gpu::SyncToken& sync_token,
+                           mojom::VRSubmitFrameClientPtr submit_client) = 0;
   virtual void UpdateLayerBounds(int16_t frame_index,
                                  mojom::VRLayerBoundsPtr left_bounds,
-                                 mojom::VRLayerBoundsPtr right_bounds) = 0;
+                                 mojom::VRLayerBoundsPtr right_bounds,
+                                 int16_t source_width,
+                                 int16_t source_height) = 0;
   virtual void GetVRVSyncProvider(mojom::VRVSyncProviderRequest request) = 0;
 
   virtual void AddDisplay(VRDisplayImpl* display);